|Origin:||décliner, from Latin declinare 'to turn aside, inflect'|
to decrease in quantity or importance:
Spending on information technology has declined.
Car sales have declined by a quarter.
After the war, the city declined in importance.
to say no politely when someone invites you somewhere, offers you something, or wants you to do something:
say no[intransitive and transitive] formal
Offered the position of chairman, Smith declined, preferring to keep his current job.
Mary declined a hot drink and went to her room.
decline an offer/invitation etc
Mary declined Jay's invitation to dinner.
to become gradually worse in quality [= deteriorate]:
Her health has been declining progressively for several months.
Qualified staff are leaving and standards are declining.
the last years of someone's life
if a noun, pronoun, or adjective declines, its form changes according to whether it is the subject, object etc of a sentence
if you decline a noun, pronoun, or adjective, you show the various forms that it can take
declining attendance at baseball games